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" A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. "
A course of practical geometry for mechanics - Page 7
by William Pease - 1856
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The definitions, postulates, axioms, and enunciations of the propositions of ...

Euclides - 1848 - 52 pages
...each other in a plane which meet together, but not in the same straight line. IX. A plane rectilineal angle is the inclination of two straight lines to...meet together, but are not in the same straight line. X. When a straight line standing on another straight line, makes the adjacent angles equal to each...
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The first three books of Euclid's Elements of geometry, with theorems and ...

Euclid, Thomas Tate - 1849 - 120 pages
...another in a plane, which meet together, but are not in the same direction." IX. A plane rectilineal angle is the inclination of two straight lines to...line. NB "When several angles are at one point B, anyone of them is expressed by three letters, of which the letter that is at the vertex of the angle,...
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A Manual of Surveying for India, Detailing the Mode of Operations on the ...

Sir Henry Edward Landor Thuillier - Surveying - 1851 - 826 pages
...points being taken, the straight line between them lies wholly in that superficies. A plane rectilineal angle is the inclination of two straight lines to...together, but are not in the same straight line.* When a straight line standing upon another straight line makes the adjacent angles equal to one another,...
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The first two books of the Elements of Euclid, with additional figures ...

Euclides - 1852 - 152 pages
...[Fig. 1., plane rectilineal angle; Jig. 2., plane angle, not rectilineal.] Fig. 1. A plane rectilineal angle is the inclination of two straight lines to...meet together, but are not in the same straight line. IX. NB " When several angles are at one point B, any one of them is expressed by three letters, of...
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The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

Royal Military Academy, Woolwich - Mathematics - 1853 - 400 pages
...another in a plane, which meet together, but are not in the same direction. 9. A plane rectilineal angle is the inclination of two straight lines to...meet together, but are not in the same straight line. When several angles are at one point B, any one of them is expressed by three letters, of which the...
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The Elements of Euclid, books i-vi; xi. 1-21; xii. 1,2; ed. by H.J. Hose, Book 1

Euclides - Geometry - 1853 - 334 pages
...a plane, which meet together in a point, but are not in the same direction. IX. A plane rectilinear angle is the inclination of two straight lines to one another, which meet together in a point, but are not in the same straight line. OBS. 1 . Unless the contrary be expressly stated,...
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Manual of astronomy

John Drew - Astronomical instruments - 1853 - 386 pages
...SJ Hersehel. PAKT III. PRACTICAL ASTRONOMY. DEFINITIONS. 205. 1. AN ANGLE is the inclination of two lines to one another, which meet together, but are not in the same direction. Since the principal part of Practical Astronomy consists in the right measurement of angles,...
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The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855 - 270 pages
...definition is put in brackets, as useless, and unnecessary to be remembered. .IX. A plane rectilineal angle is the inclination of two straight lines to...meet together, but are not in the same straight line. When two straight lines meet at a point, so that if produced they would intersect (cross) each other,...
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Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...

Euclides - 1858 - 248 pages
...is the opening of two lines from their point of meeting, or of intersection. 9. A plane rectilineal angle is the inclination of two straight lines to...meet together, but are not in the same straight line. A plane rectilineal angle is the opening of two straight lines from their point of meeting or of intersection,...
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The Train, Volume 5

1858 - 402 pages
...friendship is the concord between, or inclination of, a knave and a fool, or two sharpers, or two fools, to one another, which meet together, but are not in the same straight line, each working for himself. This is the plane rectilineal angle of common life. VII. When one man stands...
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